#pragma once

/*
* Pull in WINDOWS.H if necessary
*/
#ifndef _INC_WINDOWS
#include <windows.h>
#endif /* _INC_WINDOWS */


/*
* Basic system type definitions, taken from the BSD file sys/types.h.
*/
typedef unsigned char   u_char;
typedef unsigned short  u_short;
typedef unsigned int    u_int;
typedef unsigned long   u_long;

/*
* The new type to be used in all
* instances which refer to sockets.
*/

typedef UINT_PTR        SOCKET;

/*
* Select uses arrays of SOCKETs.  These macros manipulate such
* arrays.  FD_SETSIZE may be defined by the user before including
* this file, but the default here should be >= 64.
*
* CAVEAT IMPLEMENTOR and USER: THESE MACROS AND TYPES MUST BE
* INCLUDED IN WINSOCK.H EXACTLY AS SHOWN HERE.
*/
#ifndef FD_SETSIZE
#define FD_SETSIZE      64
#endif /* FD_SETSIZE */

typedef struct fd_set {
	u_int   fd_count;               /* how many are SET? */
	SOCKET  fd_array[FD_SETSIZE];   /* an array of SOCKETs */
} fd_set;

#ifdef __cplusplus
extern "C" {
#endif

	extern int PASCAL FAR __WSAFDIsSet(SOCKET, fd_set FAR *);

#ifdef __cplusplus
}
#endif


#define FD_CLR(fd, set) do { \
	u_int __i; \
	for (__i = 0; __i < ((fd_set FAR *)(set))->fd_count; __i++) {\
\
	\
	if (((fd_set FAR *)(set))->fd_array[__i] == fd) {\
		\
		\
		while (__i < ((fd_set FAR *)(set))->fd_count - 1) {\
			\
			\
			((fd_set FAR *)(set))->fd_array[__i] = \
			((fd_set FAR *)(set))->fd_array[__i + 1]; \
			__i++; \
		} \
		((fd_set FAR *)(set))->fd_count--; \
		break; \
	} \
	} \
} while (0)

#define FD_SET(fd, set) do { \
	if (((fd_set FAR *)(set))->fd_count < FD_SETSIZE) \
	((fd_set FAR *)(set))->fd_array[((fd_set FAR *)(set))->fd_count++] = (fd); \
		} while (0)

#define FD_ZERO(set) (((fd_set FAR *)(set))->fd_count=0)

#define FD_ISSET(fd, set) __WSAFDIsSet((SOCKET)(fd), (fd_set FAR *)(set))

		/*
		* Structure used in select() call, taken from the BSD file sys/time.h.
		*/
		struct timeval {
			long    tv_sec;         /* seconds */
			long    tv_usec;        /* and microseconds */
		};

		/*
		* Operations on timevals.
		*
		* NB: timercmp does not work for >= or <=.
		*/
#define timerisset(tvp)         ((tvp)->tv_sec || (tvp)->tv_usec)
#define timercmp(tvp, uvp, cmp) \
	((tvp)->tv_sec cmp(uvp)->tv_sec || \
	(tvp)->tv_sec == (uvp)->tv_sec && (tvp)->tv_usec cmp(uvp)->tv_usec)
#define timerclear(tvp)         (tvp)->tv_sec = (tvp)->tv_usec = 0

		/*
		* Commands for ioctlsocket(),  taken from the BSD file fcntl.h.
		*
		*
		* Ioctl's have the command encoded in the lower word,
		* and the size of any in or out parameters in the upper
		* word.  The high 2 bits of the upper word are used
		* to encode the in/out status of the parameter; for now
		* we restrict parameters to at most 128 bytes.
		*/
#define IOCPARM_MASK    0x7f            /* parameters must be < 128 bytes */
#define IOC_VOID        0x20000000      /* no parameters */
#define IOC_OUT         0x40000000      /* copy out parameters */
#define IOC_IN          0x80000000      /* copy in parameters */
#define IOC_INOUT       (IOC_IN|IOC_OUT)
		/* 0x20000000 distinguishes new &
		old ioctl's */
#define _IO(x,y)        (IOC_VOID|((x)<<8)|(y))

#define _IOR(x,y,t)     (IOC_OUT|(((long)sizeof(t)&IOCPARM_MASK)<<16)|((x)<<8)|(y))

#define _IOW(x,y,t)     (IOC_IN|(((long)sizeof(t)&IOCPARM_MASK)<<16)|((x)<<8)|(y))

#define FIONREAD    _IOR('f', 127, u_long) /* get # bytes to read */
#define FIONBIO     _IOW('f', 126, u_long) /* set/clear non-blocking i/o */
#define FIOASYNC    _IOW('f', 125, u_long) /* set/clear async i/o */

		/* Socket I/O Controls */
#define SIOCSHIWAT  _IOW('s',  0, u_long)  /* set high watermark */
#define SIOCGHIWAT  _IOR('s',  1, u_long)  /* get high watermark */
#define SIOCSLOWAT  _IOW('s',  2, u_long)  /* set low watermark */
#define SIOCGLOWAT  _IOR('s',  3, u_long)  /* get low watermark */
#define SIOCATMARK  _IOR('s',  7, u_long)  /* at oob mark? */

		/*
		* Structures returned by network data base library, taken from the
		* BSD file netdb.h.  All addresses are supplied in host order, and
		* returned in network order (suitable for use in system calls).
		*/

		struct  hostent {
			char    FAR * h_name;           /* official name of host */
			char    FAR * FAR * h_aliases;  /* alias list */
			short   h_addrtype;             /* host address type */
			short   h_length;               /* length of address */
			char    FAR * FAR * h_addr_list; /* list of addresses */
#define h_addr  h_addr_list[0]          /* address, for backward compat */
		};

		/*
		* It is assumed here that a network number
		* fits in 32 bits.
		*/
		struct  netent {
			char    FAR * n_name;           /* official name of net */
			char    FAR * FAR * n_aliases;  /* alias list */
			short   n_addrtype;             /* net address type */
			u_long  n_net;                  /* network # */
		};

		struct  servent {
			char    FAR * s_name;           /* official service name */
			char    FAR * FAR * s_aliases;  /* alias list */
#ifdef _WIN64
			char    FAR * s_proto;          /* protocol to use */
			short   s_port;                 /* port # */
#else
			short   s_port;                 /* port # */
			char    FAR * s_proto;          /* protocol to use */
#endif
		};

		struct  protoent {
			char    FAR * p_name;           /* official protocol name */
			char    FAR * FAR * p_aliases;  /* alias list */
			short   p_proto;                /* protocol # */
		};

		/*
		* Constants and structures defined by the internet system,
		* Per RFC 790, September 1981, taken from the BSD file netinet/in.h.
		*/

		/*
		* Protocols
		*/
#define IPPROTO_IP              0               /* dummy for IP */
#define IPPROTO_ICMP            1               /* control message protocol */
#define IPPROTO_IGMP            2               /* group management protocol */
#define IPPROTO_GGP             3               /* gateway^2 (deprecated) */
#define IPPROTO_TCP             6               /* tcp */
#define IPPROTO_PUP             12              /* pup */
#define IPPROTO_UDP             17              /* user datagram protocol */
#define IPPROTO_IDP             22              /* xns idp */
#define IPPROTO_ND              77              /* UNOFFICIAL net disk proto */

#define IPPROTO_RAW             255             /* raw IP packet */
#define IPPROTO_MAX             256

		/*
		* Port/socket numbers: network standard functions
		*/
#define IPPORT_ECHO             7
#define IPPORT_DISCARD          9
#define IPPORT_SYSTAT           11
#define IPPORT_DAYTIME          13
#define IPPORT_NETSTAT          15
#define IPPORT_FTP              21
#define IPPORT_TELNET           23
#define IPPORT_SMTP             25
#define IPPORT_TIMESERVER       37
#define IPPORT_NAMESERVER       42
#define IPPORT_WHOIS            43
#define IPPORT_MTP              57

		/*
		* Port/socket numbers: host specific functions
		*/
#define IPPORT_TFTP             69
#define IPPORT_RJE              77
#define IPPORT_FINGER           79
#define IPPORT_TTYLINK          87
#define IPPORT_SUPDUP           95

		/*
		* UNIX TCP sockets
		*/
#define IPPORT_EXECSERVER       512
#define IPPORT_LOGINSERVER      513
#define IPPORT_CMDSERVER        514
#define IPPORT_EFSSERVER        520

		/*
		* UNIX UDP sockets
		*/
#define IPPORT_BIFFUDP          512
#define IPPORT_WHOSERVER        513
#define IPPORT_ROUTESERVER      520
		/* 520+1 also used */

		/*
		* Ports < IPPORT_RESERVED are reserved for
		* privileged processes (e.g. root).
		*/
#define IPPORT_RESERVED         1024

		/*
		* Link numbers
		*/
#define IMPLINK_IP              155
#define IMPLINK_LOWEXPER        156
#define IMPLINK_HIGHEXPER       158

#include <inaddr.h>

		/*
		* Definitions of bits in internet address integers.
		* On subnets, the decomposition of addresses to host and net parts
		* is done according to subnet mask, not the masks here.
		*/
#define IN_CLASSA(i)            (((long)(i) & 0x80000000) == 0)
#define IN_CLASSA_NET           0xff000000
#define IN_CLASSA_NSHIFT        24
#define IN_CLASSA_HOST          0x00ffffff
#define IN_CLASSA_MAX           128

#define IN_CLASSB(i)            (((long)(i) & 0xc0000000) == 0x80000000)
#define IN_CLASSB_NET           0xffff0000
#define IN_CLASSB_NSHIFT        16
#define IN_CLASSB_HOST          0x0000ffff
#define IN_CLASSB_MAX           65536

#define IN_CLASSC(i)            (((long)(i) & 0xe0000000) == 0xc0000000)
#define IN_CLASSC_NET           0xffffff00
#define IN_CLASSC_NSHIFT        8
#define IN_CLASSC_HOST          0x000000ff

#define INADDR_ANY              (u_long)0x00000000
#define INADDR_LOOPBACK         0x7f000001
#define INADDR_BROADCAST        (u_long)0xffffffff
#define INADDR_NONE             0xffffffff

		/*
		* Socket address, internet style.
		*/
		struct sockaddr_in {
			short   sin_family;
			u_short sin_port;
			struct  in_addr sin_addr;
			char    sin_zero[8];
		};

#define WSADESCRIPTION_LEN      256
#define WSASYS_STATUS_LEN       128

		typedef struct WSAData {
			WORD                    wVersion;
			WORD                    wHighVersion;
#ifdef _WIN64
			unsigned short          iMaxSockets;
			unsigned short          iMaxUdpDg;
			char FAR *              lpVendorInfo;
			char                    szDescription[WSADESCRIPTION_LEN + 1];
			char                    szSystemStatus[WSASYS_STATUS_LEN + 1];
#else
			char                    szDescription[WSADESCRIPTION_LEN + 1];
			char                    szSystemStatus[WSASYS_STATUS_LEN + 1];
			unsigned short          iMaxSockets;
			unsigned short          iMaxUdpDg;
			char FAR *              lpVendorInfo;
#endif
		} WSADATA;

		typedef WSADATA FAR *LPWSADATA;

		/*
		* Options for use with [gs]etsockopt at the IP level.
		*/
#define IP_OPTIONS          1           /* set/get IP per-packet options    */
#define IP_MULTICAST_IF     2           /* set/get IP multicast interface   */
#define IP_MULTICAST_TTL    3           /* set/get IP multicast timetolive  */
#define IP_MULTICAST_LOOP   4           /* set/get IP multicast loopback    */
#define IP_ADD_MEMBERSHIP   5           /* add  an IP group membership      */
#define IP_DROP_MEMBERSHIP  6           /* drop an IP group membership      */
#define IP_TTL              7           /* set/get IP Time To Live          */
#define IP_TOS              8           /* set/get IP Type Of Service       */
#define IP_DONTFRAGMENT     9           /* set/get IP Don't Fragment flag   */


#define IP_DEFAULT_MULTICAST_TTL   1    /* normally limit m'casts to 1 hop  */
#define IP_DEFAULT_MULTICAST_LOOP  1    /* normally hear sends if a member  */
#define IP_MAX_MEMBERSHIPS         20   /* per socket; must fit in one mbuf */

		/*
		* Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP.
		*/
		struct ip_mreq {
			struct in_addr  imr_multiaddr;  /* IP multicast address of group */
			struct in_addr  imr_interface;  /* local IP address of interface */
		};

		/*
		* Definitions related to sockets: types, address families, options,
		* taken from the BSD file sys/socket.h.
		*/

		/*
		* This is used instead of -1, since the
		* SOCKET type is unsigned.
		*/
#define INVALID_SOCKET  (SOCKET)(~0)
#define SOCKET_ERROR            (-1)

		/*
		* Types
		*/
#define SOCK_STREAM     1               /* stream socket */
#define SOCK_DGRAM      2               /* datagram socket */
#define SOCK_RAW        3               /* raw-protocol interface */
#define SOCK_RDM        4               /* reliably-delivered message */
#define SOCK_SEQPACKET  5               /* sequenced packet stream */

		/*
		* Option flags per-socket.
		*/
#define SO_DEBUG        0x0001          /* turn on debugging info recording */
#define SO_ACCEPTCONN   0x0002          /* socket has had listen() */
#define SO_REUSEADDR    0x0004          /* allow local address reuse */
#define SO_KEEPALIVE    0x0008          /* keep connections alive */
#define SO_DONTROUTE    0x0010          /* just use interface addresses */
#define SO_BROADCAST    0x0020          /* permit sending of broadcast msgs */
#define SO_USELOOPBACK  0x0040          /* bypass hardware when possible */
#define SO_LINGER       0x0080          /* linger on close if data present */
#define SO_OOBINLINE    0x0100          /* leave received OOB data in line */

#define SO_DONTLINGER   (u_int)(~SO_LINGER)

		/*
		* Additional options.
		*/
#define SO_SNDBUF       0x1001          /* send buffer size */
#define SO_RCVBUF       0x1002          /* receive buffer size */
#define SO_SNDLOWAT     0x1003          /* send low-water mark */
#define SO_RCVLOWAT     0x1004          /* receive low-water mark */
#define SO_SNDTIMEO     0x1005          /* send timeout */
#define SO_RCVTIMEO     0x1006          /* receive timeout */
#define SO_ERROR        0x1007          /* get error status and clear */
#define SO_TYPE         0x1008          /* get socket type */

		/*
		* Options for connect and disconnect data and options.  Used only by
		* non-TCP/IP transports such as DECNet, OSI TP4, etc.
		*/
#define SO_CONNDATA     0x7000
#define SO_CONNOPT      0x7001
#define SO_DISCDATA     0x7002
#define SO_DISCOPT      0x7003
#define SO_CONNDATALEN  0x7004
#define SO_CONNOPTLEN   0x7005
#define SO_DISCDATALEN  0x7006
#define SO_DISCOPTLEN   0x7007

		/*
		* Option for opening sockets for synchronous access.
		*/
#define SO_OPENTYPE     0x7008

#define SO_SYNCHRONOUS_ALERT    0x10
#define SO_SYNCHRONOUS_NONALERT 0x20

		/*
		* Other NT-specific options.
		*/
#define SO_MAXDG        0x7009
#define SO_MAXPATHDG    0x700A
#define SO_UPDATE_ACCEPT_CONTEXT 0x700B
#define SO_CONNECT_TIME 0x700C

		/*
		* TCP options.
		*/
#define TCP_NODELAY     0x0001
#define TCP_BSDURGENT   0x7000

		/*
		* Address families.
		*/
#define AF_UNSPEC       0               /* unspecified */
#define AF_UNIX         1               /* local to host (pipes, portals) */
#define AF_INET         2               /* internetwork: UDP, TCP, etc. */
#define AF_IMPLINK      3               /* arpanet imp addresses */
#define AF_PUP          4               /* pup protocols: e.g. BSP */
#define AF_CHAOS        5               /* mit CHAOS protocols */
#define AF_IPX          6               /* IPX and SPX */
#define AF_NS           6               /* XEROX NS protocols */
#define AF_ISO          7               /* ISO protocols */
#define AF_OSI          AF_ISO          /* OSI is ISO */
#define AF_ECMA         8               /* european computer manufacturers */
#define AF_DATAKIT      9               /* datakit protocols */
#define AF_CCITT        10              /* CCITT protocols, X.25 etc */
#define AF_SNA          11              /* IBM SNA */
#define AF_DECnet       12              /* DECnet */
#define AF_DLI          13              /* Direct data link interface */
#define AF_LAT          14              /* LAT */
#define AF_HYLINK       15              /* NSC Hyperchannel */
#define AF_APPLETALK    16              /* AppleTalk */
#define AF_NETBIOS      17              /* NetBios-style addresses */
#define AF_VOICEVIEW    18              /* VoiceView */
#define AF_FIREFOX      19              /* FireFox */
#define AF_UNKNOWN1     20              /* Somebody is using this! */
#define AF_BAN          21              /* Banyan */

#define AF_MAX          22
#define AF_INET6        23 
		/*
		* Structure used by kernel to store most
		* addresses.
		*/
		struct sockaddr {
			u_short sa_family;              /* address family */
			char    sa_data[14];            /* up to 14 bytes of direct address */
		};

		/*
		* Structure used by kernel to pass protocol
		* information in raw sockets.
		*/
		struct sockproto {
			u_short sp_family;              /* address family */
			u_short sp_protocol;            /* protocol */
		};

		/*
		* Protocol families, same as address families for now.
		*/
#define PF_UNSPEC       AF_UNSPEC
#define PF_UNIX         AF_UNIX
#define PF_INET         AF_INET
#define PF_IMPLINK      AF_IMPLINK
#define PF_PUP          AF_PUP
#define PF_CHAOS        AF_CHAOS
#define PF_NS           AF_NS
#define PF_IPX          AF_IPX
#define PF_ISO          AF_ISO
#define PF_OSI          AF_OSI
#define PF_ECMA         AF_ECMA
#define PF_DATAKIT      AF_DATAKIT
#define PF_CCITT        AF_CCITT
#define PF_SNA          AF_SNA
#define PF_DECnet       AF_DECnet
#define PF_DLI          AF_DLI
#define PF_LAT          AF_LAT
#define PF_HYLINK       AF_HYLINK
#define PF_APPLETALK    AF_APPLETALK
#define PF_VOICEVIEW    AF_VOICEVIEW
#define PF_FIREFOX      AF_FIREFOX
#define PF_UNKNOWN1     AF_UNKNOWN1
#define PF_BAN          AF_BAN

#define PF_MAX          AF_MAX

		/*
		* Structure used for manipulating linger option.
		*/
		struct  linger {
			u_short l_onoff;                /* option on/off */
			u_short l_linger;               /* linger time */
		};

		/*
		* Level number for (get/set)sockopt() to apply to socket itself.
		*/
#define SOL_SOCKET      0xffff          /* options for socket level */

		/*
		* Maximum queue length specifiable by listen.
		*/
#define SOMAXCONN       5

#define MSG_OOB         0x1             /* process out-of-band data */
#define MSG_PEEK        0x2             /* peek at incoming message */
#define MSG_DONTROUTE   0x4             /* send without using routing tables */

#define MSG_MAXIOVLEN   16

#define MSG_PARTIAL     0x8000          /* partial send or recv for message xport */

		/*
		* Define constant based on rfc883, used by gethostbyxxxx() calls.
		*/
#define MAXGETHOSTSTRUCT        1024

		/*
		* Define flags to be used with the WSAAsyncSelect() call.
		*/
#define FD_READ         0x01
#define FD_WRITE        0x02
#define FD_OOB          0x04
#define FD_ACCEPT       0x08
#define FD_CONNECT      0x10
#define FD_CLOSE        0x20

		/*
		* WinSock error codes are also defined in winerror.h
		* Hence the IFDEF.
		*/
#ifndef WSABASEERR

		/*
		* All Windows Sockets error constants are biased by WSABASEERR from
		* the "normal"
		*/
#define WSABASEERR              10000
		/*
		* Windows Sockets definitions of regular Microsoft C error constants
		*/
#define WSAEINTR                (WSABASEERR+4)
#define WSAEBADF                (WSABASEERR+9)
#define WSAEACCES               (WSABASEERR+13)
#define WSAEFAULT               (WSABASEERR+14)
#define WSAEINVAL               (WSABASEERR+22)
#define WSAEMFILE               (WSABASEERR+24)

		/*
		* Windows Sockets definitions of regular Berkeley error constants
		*/
#define WSAEWOULDBLOCK          (WSABASEERR+35)
#define WSAEINPROGRESS          (WSABASEERR+36)
#define WSAEALREADY             (WSABASEERR+37)
#define WSAENOTSOCK             (WSABASEERR+38)
#define WSAEDESTADDRREQ         (WSABASEERR+39)
#define WSAEMSGSIZE             (WSABASEERR+40)
#define WSAEPROTOTYPE           (WSABASEERR+41)
#define WSAENOPROTOOPT          (WSABASEERR+42)
#define WSAEPROTONOSUPPORT      (WSABASEERR+43)
#define WSAESOCKTNOSUPPORT      (WSABASEERR+44)
#define WSAEOPNOTSUPP           (WSABASEERR+45)
#define WSAEPFNOSUPPORT         (WSABASEERR+46)
#define WSAEAFNOSUPPORT         (WSABASEERR+47)
#define WSAEADDRINUSE           (WSABASEERR+48)
#define WSAEADDRNOTAVAIL        (WSABASEERR+49)
#define WSAENETDOWN             (WSABASEERR+50)
#define WSAENETUNREACH          (WSABASEERR+51)
#define WSAENETRESET            (WSABASEERR+52)
#define WSAECONNABORTED         (WSABASEERR+53)
#define WSAECONNRESET           (WSABASEERR+54)
#define WSAENOBUFS              (WSABASEERR+55)
#define WSAEISCONN              (WSABASEERR+56)
#define WSAENOTCONN             (WSABASEERR+57)
#define WSAESHUTDOWN            (WSABASEERR+58)
#define WSAETOOMANYREFS         (WSABASEERR+59)
#define WSAETIMEDOUT            (WSABASEERR+60)
#define WSAECONNREFUSED         (WSABASEERR+61)
#define WSAELOOP                (WSABASEERR+62)
#define WSAENAMETOOLONG         (WSABASEERR+63)
#define WSAEHOSTDOWN            (WSABASEERR+64)
#define WSAEHOSTUNREACH         (WSABASEERR+65)
#define WSAENOTEMPTY            (WSABASEERR+66)
#define WSAEPROCLIM             (WSABASEERR+67)
#define WSAEUSERS               (WSABASEERR+68)
#define WSAEDQUOT               (WSABASEERR+69)
#define WSAESTALE               (WSABASEERR+70)
#define WSAEREMOTE              (WSABASEERR+71)

#define WSAEDISCON              (WSABASEERR+101)

		/*
		* Extended Windows Sockets error constant definitions
		*/
#define WSASYSNOTREADY          (WSABASEERR+91)
#define WSAVERNOTSUPPORTED      (WSABASEERR+92)
#define WSANOTINITIALISED       (WSABASEERR+93)

		/*
		* Error return codes from gethostbyname() and gethostbyaddr()
		* (when using the resolver). Note that these errors are
		* retrieved via WSAGetLastError() and must therefore follow
		* the rules for avoiding clashes with error numbers from
		* specific implementations or language run-time systems.
		* For this reason the codes are based at WSABASEERR+1001.
		* Note also that [WSA]NO_ADDRESS is defined only for
		* compatibility purposes.
		*/


		/* Authoritative Answer: Host not found */
#define WSAHOST_NOT_FOUND       (WSABASEERR+1001)

		/* Non-Authoritative: Host not found, or SERVERFAIL */
#define WSATRY_AGAIN            (WSABASEERR+1002)

		/* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
#define WSANO_RECOVERY          (WSABASEERR+1003)

		/* Valid name, no data record of requested type */
#define WSANO_DATA              (WSABASEERR+1004)

		/* Authoritative Answer: Host not found Securely */
#define WSA_SECURE_HOST_NOT_FOUND (WSABASEERR+1032)


		/* Name based IPSEC policy could not be added*/
#define WSA_IPSEC_NAME_POLICY_ERROR (WSABASEERR+1033)

		/*
		* WinSock error codes are also defined in winerror.h
		* Hence the IFDEF.
		*/
#endif /* ifdef WSABASEERR */

		/*
		* Compatibility macros.
		*/


#define h_errno         WSAGetLastError()
#define HOST_NOT_FOUND          WSAHOST_NOT_FOUND
#define TRY_AGAIN               WSATRY_AGAIN
#define NO_RECOVERY             WSANO_RECOVERY
#define NO_DATA                 WSANO_DATA
		/* no address, look for MX record */
#define WSANO_ADDRESS           WSANO_DATA
#define NO_ADDRESS              WSANO_ADDRESS

		/*
		* Windows Sockets errors redefined as regular Berkeley error constants.
		* These are commented out in Windows NT to avoid conflicts with errno.h.
		* Use the WSA constants instead.
		*/
#if 0
#define EWOULDBLOCK             WSAEWOULDBLOCK
#define EINPROGRESS             WSAEINPROGRESS
#define EALREADY                WSAEALREADY
#define ENOTSOCK                WSAENOTSOCK
#define EDESTADDRREQ            WSAEDESTADDRREQ
#define EMSGSIZE                WSAEMSGSIZE
#define EPROTOTYPE              WSAEPROTOTYPE
#define ENOPROTOOPT             WSAENOPROTOOPT
#define EPROTONOSUPPORT         WSAEPROTONOSUPPORT
#define ESOCKTNOSUPPORT         WSAESOCKTNOSUPPORT
#define EOPNOTSUPP              WSAEOPNOTSUPP
#define EPFNOSUPPORT            WSAEPFNOSUPPORT
#define EAFNOSUPPORT            WSAEAFNOSUPPORT
#define EADDRINUSE              WSAEADDRINUSE
#define EADDRNOTAVAIL           WSAEADDRNOTAVAIL
#define ENETDOWN                WSAENETDOWN
#define ENETUNREACH             WSAENETUNREACH
#define ENETRESET               WSAENETRESET
#define ECONNABORTED            WSAECONNABORTED
#define ECONNRESET              WSAECONNRESET
#define ENOBUFS                 WSAENOBUFS
#define EISCONN                 WSAEISCONN
#define ENOTCONN                WSAENOTCONN
#define ESHUTDOWN               WSAESHUTDOWN
#define ETOOMANYREFS            WSAETOOMANYREFS
#define ETIMEDOUT               WSAETIMEDOUT
#define ECONNREFUSED            WSAECONNREFUSED
#define ELOOP                   WSAELOOP
#define ENAMETOOLONG            WSAENAMETOOLONG
#define EHOSTDOWN               WSAEHOSTDOWN
#define EHOSTUNREACH            WSAEHOSTUNREACH
#define ENOTEMPTY               WSAENOTEMPTY
#define EPROCLIM                WSAEPROCLIM
#define EUSERS                  WSAEUSERS
#define EDQUOT                  WSAEDQUOT
#define ESTALE                  WSAESTALE
#define EREMOTE                 WSAEREMOTE
#endif

		/* Socket function prototypes */

#ifdef __cplusplus
		extern "C" {
#endif
            void __stdcall Sleep(_In_ DWORD dwMilliseconds);

			SOCKET PASCAL FAR accept(
				_In_ SOCKET s,
				_Out_writes_bytes_opt_(*addrlen) struct sockaddr FAR *addr,
				_Inout_opt_ int FAR *addrlen);

			int PASCAL FAR bind(
				_In_ SOCKET s,
				_In_reads_bytes_(namelen) const struct sockaddr FAR *addr,
				_In_ int namelen);

			int PASCAL FAR closesocket(IN SOCKET s);

			int PASCAL FAR connect(
				_In_ SOCKET s,
				_In_reads_bytes_(namelen) const struct sockaddr FAR *name,
				_In_ int namelen);

			int PASCAL FAR ioctlsocket(
				_In_ SOCKET s,
				_In_ long cmd,
				_Inout_ u_long FAR *argp);

			int PASCAL FAR getpeername(
				_In_ SOCKET s,
				_Out_writes_bytes_to_(*namelen, *namelen) struct sockaddr FAR *name,
				_Inout_ int FAR * namelen);

			int PASCAL FAR getsockname(
				_In_ SOCKET s,
				_Out_writes_bytes_to_(*namelen, *namelen) struct sockaddr FAR *name,
				_Inout_ int FAR * namelen);

 			int PASCAL FAR getsockopt(
				_In_ SOCKET s,
				_In_ int level,
				_In_ int optname,
				_Out_writes_bytes_(*optlen) char FAR * optval,
				_Inout_ int FAR *optlen);

			u_long PASCAL FAR htonl(_In_ u_long hostlong);

			u_short PASCAL FAR htons(_In_ u_short hostshort);

			unsigned long PASCAL FAR inet_addr(_In_z_ const char FAR * cp);

			char FAR * PASCAL FAR inet_ntoa(_In_ struct in_addr in);

			int PASCAL FAR listen(
				_In_ SOCKET s,
				_In_ int backlog);

			u_long PASCAL FAR ntohl(_In_ u_long netlong);

			u_short PASCAL FAR ntohs(_In_ u_short netshort);

			int PASCAL FAR recv(
				_In_ SOCKET s,
				_Out_writes_bytes_to_(len, return) __out_data_source(NETWORK) char FAR * buf,
				_In_ int len,
				_In_ int flags);

			int PASCAL FAR recvfrom(
				_In_ SOCKET s,
				_Out_writes_bytes_to_(len, return) __out_data_source(NETWORK) char FAR * buf,
				_In_ int len,
				_In_ int flags,
				_Out_writes_bytes_to_opt_(*fromlen, *fromlen) struct sockaddr FAR * from,
				_Inout_opt_ int FAR * fromlen);

			int PASCAL FAR select(
				_In_ int nfds,
				_Inout_opt_ fd_set FAR *readfds,
				_Inout_opt_ fd_set FAR *writefds,
				_Inout_opt_ fd_set FAR *exceptfds,
				_In_opt_  const struct timeval FAR *timeout);

			int PASCAL FAR send(
				_In_ SOCKET s,
				_In_reads_bytes_(len) const char FAR * buf,
				_In_ int len,
				_In_ int flags);

			int PASCAL FAR sendto(
				_In_ SOCKET s,
				_In_reads_bytes_(len) const char FAR * buf,
				_In_ int len,
				_In_ int flags,
				_In_reads_bytes_opt_(tolen) const struct sockaddr FAR *to,
				_In_ int tolen);

			int PASCAL FAR setsockopt(
				_In_ SOCKET s,
				_In_ int level,
				_In_ int optname,
				_In_reads_bytes_opt_(optlen) const char FAR * optval,
				_In_ int optlen);

			int PASCAL FAR shutdown(
				_In_ SOCKET s,
				_In_ int how);

			SOCKET PASCAL FAR socket(
				_In_ int af,
				_In_ int type,
				_In_ int protocol);

			/* Database function prototypes */

			struct hostent FAR * PASCAL FAR gethostbyaddr(
				_In_reads_bytes_(len) const char FAR * addr,
				_In_ int len,
				_In_ int type);

			struct hostent FAR * PASCAL FAR gethostbyname(_In_z_ const char FAR * name);

			int PASCAL FAR gethostname(
				_Out_writes_bytes_to_(namelen, return) char FAR * name,
				_In_ int namelen);

			struct servent FAR * PASCAL FAR getservbyport(
				_In_ int port,
				_In_z_ const char FAR * proto);

			struct servent FAR * PASCAL FAR getservbyname(
				_In_z_ const char FAR * name,
				_In_z_ const char FAR * proto);

			struct protoent FAR * PASCAL FAR getprotobynumber(_In_ int proto);

			struct protoent FAR * PASCAL FAR getprotobyname(_In_z_ const char FAR * name);

			/* Microsoft Windows Extension function prototypes */

			int PASCAL FAR WSAStartup(
				_In_ WORD wVersionRequired,
				_Out_ LPWSADATA lpWSAData);

			int PASCAL FAR WSACleanup(void);

			void PASCAL FAR WSASetLastError(_In_ int iError);

			int PASCAL FAR WSAGetLastError(void);

			BOOL PASCAL FAR WSAIsBlocking(void);

			int PASCAL FAR WSAUnhookBlockingHook(void);

			FARPROC PASCAL FAR WSASetBlockingHook(_In_ FARPROC lpBlockFunc);

			int PASCAL FAR WSACancelBlockingCall(void);

			HANDLE PASCAL FAR WSAAsyncGetServByName(
				_In_ HWND hWnd,
				_In_ u_int wMsg,
				_In_z_ const char FAR * name,
				_In_z_ const char FAR * proto,
				_Out_writes_bytes_(buflen) char FAR * buf,
				_In_ int buflen);

			HANDLE PASCAL FAR WSAAsyncGetServByPort(
				_In_ HWND hWnd,
				_In_ u_int wMsg,
				_In_ int port,
				_In_ const char FAR * proto,
				_Out_writes_bytes_(buflen) char FAR * buf,
				_In_ int buflen);

			HANDLE PASCAL FAR WSAAsyncGetProtoByName(
				_In_ HWND hWnd,
				_In_ u_int wMsg,
				_In_z_ const char FAR * name,
				_Out_writes_bytes_(buflen) char FAR * buf,
				_In_ int buflen);

			HANDLE PASCAL FAR WSAAsyncGetProtoByNumber(
				_In_ HWND hWnd,
				_In_ u_int wMsg,
				_In_ int number,
				_Out_writes_bytes_(buflen) char FAR * buf,
				_In_ int buflen);

			HANDLE PASCAL FAR WSAAsyncGetHostByName(
				_In_ HWND hWnd,
				_In_ u_int wMsg,
				_In_z_ const char FAR * name,
				_Out_writes_bytes_(buflen) char FAR * buf,
				_In_ int buflen);

			HANDLE PASCAL FAR WSAAsyncGetHostByAddr(
				_In_ HWND hWnd,
				_In_ u_int wMsg,
				_In_ const char FAR * addr,
				_In_ int len,
				_In_ int type,
				_Out_writes_bytes_(buflen) char FAR * buf,
				_In_ int buflen);

			int PASCAL FAR WSACancelAsyncRequest(_In_ HANDLE hAsyncTaskHandle);

			int PASCAL FAR WSAAsyncSelect(
				_In_ SOCKET s,
				_In_ HWND hWnd,
				_In_ u_int wMsg,
				_In_ long lEvent);

			int PASCAL FAR WSARecvEx(
				_In_ SOCKET s,
				_Out_writes_bytes_to_(len, return) __out_data_source(NETWORK) char FAR * buf,
				_In_ int len,
				_Inout_ int FAR *flags);

			typedef struct _TRANSMIT_FILE_BUFFERS {
				PVOID Head;
				DWORD HeadLength;
				PVOID Tail;
				DWORD TailLength;
			} TRANSMIT_FILE_BUFFERS, *PTRANSMIT_FILE_BUFFERS, *LPTRANSMIT_FILE_BUFFERS;

#define TF_DISCONNECT       0x01
#define TF_REUSE_SOCKET     0x02
#define TF_WRITE_BEHIND     0x04

			BOOL
				PASCAL FAR
				TransmitFile(
				_In_ SOCKET hSocket,
				_In_ HANDLE hFile,
				_In_ DWORD nNumberOfBytesToWrite,
				_In_ DWORD nNumberOfBytesPerSend,
				_Inout_opt_ LPOVERLAPPED lpOverlapped,
				_In_opt_ LPTRANSMIT_FILE_BUFFERS lpTransmitBuffers,
				_In_ DWORD dwReserved
				);

			BOOL
				PASCAL FAR
				AcceptEx(
				_In_ SOCKET sListenSocket,
				_In_ SOCKET sAcceptSocket,
				_Out_writes_bytes_to_(dwReceiveDataLength + dwLocalAddressLength + dwRemoteAddressLength,
				*lpdwBytesReceived) PVOID lpOutputBuffer,
				_In_ DWORD dwReceiveDataLength,
				_In_ DWORD dwLocalAddressLength,
				_In_ DWORD dwRemoteAddressLength,
				_Out_ LPDWORD lpdwBytesReceived,
				_Inout_ LPOVERLAPPED lpOverlapped
				);

			VOID
				PASCAL FAR
				GetAcceptExSockaddrs(
				_In_reads_bytes_(dwReceiveDataLength + dwLocalAddressLength + dwRemoteAddressLength) PVOID lpOutputBuffer,
				_In_ DWORD dwReceiveDataLength,
				_In_ DWORD dwLocalAddressLength,
				_In_ DWORD dwRemoteAddressLength,
				_Outptr_result_bytebuffer_(*LocalSockaddrLength) struct sockaddr **LocalSockaddr,
				_Out_ LPINT LocalSockaddrLength,
				_Outptr_result_bytebuffer_(*RemoteSockaddrLength) struct sockaddr **RemoteSockaddr,
				_Out_ LPINT RemoteSockaddrLength
				);

#ifdef __cplusplus
		}
#endif

		/* Microsoft Windows Extended data types */
		typedef struct sockaddr SOCKADDR;
		typedef struct sockaddr *PSOCKADDR;
		typedef struct sockaddr FAR *LPSOCKADDR;

		typedef struct sockaddr_in SOCKADDR_IN;
		typedef struct sockaddr_in *PSOCKADDR_IN;
		typedef struct sockaddr_in FAR *LPSOCKADDR_IN;

		typedef struct linger LINGER;
		typedef struct linger *PLINGER;
		typedef struct linger FAR *LPLINGER;

		typedef struct fd_set FD_SET;
		typedef struct fd_set *PFD_SET;
		typedef struct fd_set FAR *LPFD_SET;

		typedef struct hostent HOSTENT;
		typedef struct hostent *PHOSTENT;
		typedef struct hostent FAR *LPHOSTENT;

		typedef struct servent SERVENT;
		typedef struct servent *PSERVENT;
		typedef struct servent FAR *LPSERVENT;

		typedef struct protoent PROTOENT;
		typedef struct protoent *PPROTOENT;
		typedef struct protoent FAR *LPPROTOENT;

		typedef struct timeval TIMEVAL;
		typedef struct timeval *PTIMEVAL;
		typedef struct timeval FAR *LPTIMEVAL;

		/*
		* Windows message parameter composition and decomposition
		* macros.
		*
		* WSAMAKEASYNCREPLY is intended for use by the Windows Sockets implementation
		* when constructing the response to a WSAAsyncGetXByY() routine.
		*/
#define WSAMAKEASYNCREPLY(buflen,error)     MAKELONG(buflen,error)
		/*
		* WSAMAKESELECTREPLY is intended for use by the Windows Sockets implementation
		* when constructing the response to WSAAsyncSelect().
		*/
#define WSAMAKESELECTREPLY(event,error)     MAKELONG(event,error)
		/*
		* WSAGETASYNCBUFLEN is intended for use by the Windows Sockets application
		* to extract the buffer length from the lParam in the response
		* to a WSAGetXByY().
		*/
#define WSAGETASYNCBUFLEN(lParam)           LOWORD(lParam)
		/*
		* WSAGETASYNCERROR is intended for use by the Windows Sockets application
		* to extract the error code from the lParam in the response
		* to a WSAGetXByY().
		*/
#define WSAGETASYNCERROR(lParam)            HIWORD(lParam)
		/*
		* WSAGETSELECTEVENT is intended for use by the Windows Sockets application
		* to extract the event code from the lParam in the response
		* to a WSAAsyncSelect().
		*/
#define WSAGETSELECTEVENT(lParam)           LOWORD(lParam)
		/*
		* WSAGETSELECTERROR is intended for use by the Windows Sockets application
		* to extract the error code from the lParam in the response
		* to a WSAAsyncSelect().
		*/
#define WSAGETSELECTERROR(lParam)           HIWORD(lParam)

#if(_WIN32_WINNT >= 0x0501)
#ifdef IPV6STRICT
#error WINSOCK2 required.
#endif // IPV6STRICT
#endif //(_WIN32_WINNT >= 0x0501)



